Material and cinder-pit elevator.



No. 822,153. I PATENTED MAY 29, 1906.

W. ROBERTSON. MATERIAL AND GINDER PIT ELEVATOR.

APPLICATION FILED 0GT.17, 1904. RENEWED NOV. 2, 1905.

3 SHEETS-SHEET l.

PATENTED AY 29, 1906.

W. ROBERTSON.

MATERIAL AND OINDER PIT ELEVATOR.

APPLICATION FILED 0CT.17,190-l. RENEWED NOV 2,1905.

3 SHEETSSHEET 2.

WJ ITT WWW . I IL E Ii L No. 822,153. 4 PATENTED MAY 29, 1906. w. ROBERTSON.

MATERIAL AND GINDER PIT-ELEVATOR. APPLIGATION FILED 0OT.17, 1904. RENEWED NOV, 2, 1905 v 3 SHEETS-SHEET 3.

'tors of this class the comparatively sharp up- UNITED STATES Parana rice.

YVILLIAM ROBERTSON, OF CHICAGO, ILLINOlS.

MATERlAL AND 'GlNDER-Fl'l' ELEVATOR Specification of Letters Patent.

Eatentea may 29, 1906.

ings, and to the letters of reference marked thereon, which form a part of this specification.

. This invention relates to improvements in material-elevators, and more particularly to that class of 111aterial-elevators to which my prior invention, elevator for cinder-pits or the like, )atented to-me April 1, 1902, No. 696,491, elongs. l'leretoforc in the elevacurve of the rails at the bottom of the pit has sometimes caused an upward or downward movementof the dumping-bottom of the car, thereb y sometimes displacing the ashes or other material or at least acting as a brake upon the movement of the car. It is also true that as heretofore constructed the cable instead of drawing true at all times has a tendency to lift or to partly lift the front end of the car.

The obect of this invention is to rovide a construction whereby the dumpingottom is held from movement until dumping position is reached and also to avoid a tendency to lift the front end of the car.

It is also an object of the invention to provide a simple but strong structure upon w rich the car moves and which is so constructed as to enable the same to be erected without the aid of skilled iron-workers.

1n the drawings, Figure l is a side elevation of a device embodying my invention. Fig. 2 is an on d elevation of the same with the pit omitted. Fig. 3 is a top plan view thereof. Fig. 4 is an enlarged longitudinal section of the car. Fig. 5 is a fragmentary section taken on line 5 5 of Fig. 3.

As shown in said drawings, A indicates a railway-track having a cinder-pit (indicated b B) beneath the same. A indicates a are. lel switch-track ad j aceut to said trac I A, ada' )ted to contain the cars X, into which the cinders from the. pit are dumped by the convcyer. ltigidly sup )ortod on a suitable foundation adjacent the track A are two uprights C, comprisingjmrallel inwardly-facing channel-bars, between which is secured a pneumatic cylinder D, whereby power is supplied to the car. Parallel ways or uprights c are provided on each side the cylinder D and lit closely thereto, and lugs (i: are rigidly bolted to said cylinder and uprights c and hold the cylinder rigidly in place. Transverse angle-bars c are rigidly secured on each side said uprights at the top, connecting the same together, and a late 0 covering the same and the ends of t 1e uprights, is secured thereto, affording a rigid top beam.

Shorter standards or uprights C are provided intermediate the standards 0 and the edge of the cinder-pit, which are connected at their upper ends by transverse angle-bars c c and supported upon the beam thus formed and on angle-blocks c", bolted near the to of said standards C, are inclined track-rai s E, the upper ends of which are rigidly secured upon the uprights O and the lower ends of which extend downwardly into and are supported in the bottom of the pit B and are curved to approximately a horizontal position, as shown in Figs. 1 and 5, thus bringing the car F into position in the pit to receive a maximum load. Said rails, as shown, are each supported upon a transverse hearing or tie c at the edge of the pit and one or more ties 0 in the bottom thereof, thus affording a very rigid structure. Intermediate the track-rails E is the dumping-rail E, which, as shown, extends from the bottom of the pit upwardly to a point above the track A, where the extremity of the same is turned downwardly, affording an inclineiil end e. Supported upon said track-rails is a dumpin -car F, which may be of any suitable size. or shape to enter the cinder-pit and receive the load and which is rovidcd with a bottom section f, hinged at t ierear end of the car-body and, as shown in Figs. 1 and 4, provided with a roller or wheel 7", which tracks and is en 4 ported on the intermediate curved rail it. Said dumping-bottom extends forwardly into close. relation with a rearwardly-extending' permanently-closed bottom section f in said car so that when the hinged bottom f is closed the material is securely held in the car. The intermediate track-rail E is curved upon a different radius from the track-rails at the point where the same turn in the pit and at said point extend sufficiently above the tread-surfaces of the track-rails E to'enable the roller 7 to track thereon without movement of the bottom within the car as the track-Wheels pass the curve.

' The uprights C and c are rigidly braced by the angle-bars c and a, connected at the bottom and opposite the rear ends of the trackrail E-on tne uprights C and near the top of the cylinder D to the uprights J ournaled between and at the top of the ways or uprights 0 are the sheaves (Z, and journaled on the upper end of the piston-rod d are sheaves d about which the cable D is passed, whereby the car is actuated. Said cable leads downwardly from the 11 per end of the struc ture to the frontend of the car, upon which is provided a central strong curved bar or travelerf, one end of which is rigidly bolted at the bottom of the car and the other at the top thereof and above the track-rail E and upon which the end of the cable I) is engaged by means of an eye d through which said traveler extends and in which is provided a roller dfigwhich bears against the rear side of the traveler, enabling the line or cable to swerve up or down thereon to bring the draft at all timesjin alinement With-the center of gravity of 'the car "and its load, as shown in The operation is as follows: The weight of the car-acts normally to return the car tothe cinder-pit after dumping, where it remains until :loaded. After :the car has been filled by the dumping of the grates of a locomotive located above the pit com ressed air is admitted above the iston'o said cylinder by means of any suitafi such as pipes 11, opening :intosaid c linder and forces the piston downwardly, -t ereby elevating the car to dumping posltion. "Inasmuch as the-lower end of the cable is-.engaged upon-the traveler f by means of the roller (i thedraft is always 'ap roximately 1n alinement with the center 0 gravity, as

' shown in Fig. 1, in which the line is shown engaged'near the top of the car when in the cinder-pit and near the bottom when in dumping position. It is thus obvious :that any'tendency of the line to lift the front end of the car from the track when drawing the same fromthe pit is avoided and the draft at all -t1mes is applied at the most effective point. As the car moves upwardly from the pit the roller f tracks on the intermediate track-rail E and makes the upward turn at the bottom of the incline without movement of the'hinged bottom .in relation to the fixed bottom of the car. As the car rises the bottom remains closed until the upper inclined end e of the track-rail E is reached, when said bottom f swings downwardly, permitting the contents to fall into the receivingcar. When the'load has been dumped, pressure is released from the upper end of the cylinder, escendby gravity into le valves and connections,

from top to bottom thereof and a sheave engaging said traveler and to which the end of the cable is attached whereby the draft of the cable is at all times in alinenient with the center of gravity of the load.

2. In a dumping-elevator, an. inclined track having the lower end thereof bent to approximatelya horizontal position an intermediate track-rail having a downturned upper end, a car movable on said track, a bot tom section hinged at the rear end of the car andextending forwardly to near the middle of the car, a roller on said bottom adapted to track on said intermediaterail, a-portion of said intermediate rail adjacent the bend in the track-railshavinga curve of a-different radius from the track-'rails'and a cable operated from-the top of-the incline-and having a vertically-sliding connection with thecarend whereby the draft on said cable is at all times applied in'alinement withthe center of gravity of the cariand its load.

-3. A-car=of the-class described'comprisin'g a car-body-thaving a permanent bot-torn extending from the front .end thereof, toward the middle, a bottom section hinged at the rear end of .the car andaextending forwardly to the fixed'bottom 'anda'truck or rollerat approximatelylthe center of said car permanentlyse'cured on saidhinged bottom sec tion, and a traveler on the front-end of the car slightly outcurvedv and connected with the to and bottom of-thecar.

4. cariof the .classdescribed comprising a car-body having a fixed bottomsection extending from the front end thereof toward the middle, a bottom section hinged at'the rear end of the carand extending forwardly to the fixed'bottom section, a'truck-or roller at'approximately the center ofsaid car per manently secured on said hinged=bottom section and ada ted totrack onan intermediate rail thereby olding the bottom closed to the end of the rail and vertically-disposedmeans affording an adjustable attachment'for azcable at the front end of the car.

5. A cinder-pit elevator-car of the class described comprising a car-body having =a permanent bottomextending fromithe front end thereof, toward the middle, a bottom section hinged at-the-rearend of-the-carrand Ioo extending forwardly to the fixed bottom and a truck 01' roller at approximately the center of said car permanently secured on said hinged bottom section and a vertical traveler located centrally on the front end of the car and affording a sliding connection for the cable whereby the car is operated.

6. A cinder-pit car of the cla'ss described comprising a receptacle having a dumpingbottorn, track-wheels thereon, a cable adapted to operate said car and an outwardlycurved traveler secured at the top and bottom of the car at its front end and shaped to adapt the draft of said cable to be in alinement approximately with the center of gravity of the car.

7. The combination with a cinder-pit of an inclined track leading thereinto and having the lower ends curved to approximately horizontal, a central rail also leading into the pit and having the lower curvature of a greater radius than the track-rails, a cinder-pit elevator-car, a-hinged bottom at its rear end, a roller on said bottom at approximately the middle of the car and pneumatically-operated means to actuate the car.

. 8. In a device of the class described the combination with a pit of an inclined track leading therefrom and having a horizontal section in said pit, a car on said track a pivoted bottom thereon, means for holding said bottom in position when the car moves from the horizontal to the inclined portion of the track, a cable and means connecting said cable with the car adapting it to adjust itself to the line of draft.

9. In a device of the class described the combination with a cinder-pit of an inclined track leading upwardly therefrom and provided with a horizontal section in the bottom of said pit, an intermediate rail raised for a portion of its length above said track, a car, a pivoted bottom section thereon, a wheel on the forward end of said section adapted to track on said intermediate rail, a vertical traveler on the front of the car and a cable movably attached thereto. a

In testimony whereof I have hereunto subscribed, my name in the presence of two subscribing witnesses.

WILLIAM ROBERTSON. Witnesses:

W. W. WITHENBURY, H. S. RUDD. 

